SECTION 26 33 53 – three-phase Uninterruptible power systems GENERAL RELATED DOCUMENTS
Drawings and general provisions of the Contract, including General Conditions and Division 01 Specification Sections, apply to this Section.
Specifications throughout all Divisions of the Project Manual are directly applicable to this Section, and this Section is directly applicable to them.
General. The scope of UPS work for the project shall include but not be limited to:
1. UPS (Uninterruptible Power Systems) consisting of UPS module(s), battery
disconnect, batteries, battery cabinet, external maintenance bypass/distribution panel,
associated internal and connector wiring , a supervisory contact module, a Connect UPS
Web SNMP Xhub card and other accessories and options required for a complete and
operating systemwhich includes programing and other accessories. The UPS shall automatically maintain AC power within specified tolerances to the critical load, without interruption, during failure or deterioration of the normal power source. The work shall include, but not be limited to, providing a system with the following equipment, functions and operations.
1. The UPS system shall be a single module configuration with one UPS rectifier/inverter module with battery string, static bypass and maintenance bypass, which allows the load to be served from either the module or the utility without interruption.
2. UPS module shall be a static type UPS with a solid state inverter, rectifier/battery charger, static bypass switch, maintenance bypass switch, protective devices, synchronizing circuitry, batteries, battery cabinet, battery circuit breaker and other accessories as specified herein or required.
3. A separate full external bypass distribution panel with interlocked UPS input, bypass and output circuit breaker and UPS power distribution circuit breakers as shown or scheduled on the drawings shall be provided.
4. The UPS shall be modular plug-in design that minimizes the time required to replace a
defective module. UPS modular design shall also be made up one or more detachable modules or cabinets , preferably of the draw-out type and removable from the front. This also provides basic for a scalable UPS system. Modularity and interchangeability of sub-assemblies and printed circuit board assemblies shall be optimized. UPS shall be designed to permit ease of replacement of parts, test points, and terminal shall be such that they are accessible for circuit checking, adjustment and maintenance without the removal of any adjacent module or assembly.
5. All semiconductors in the module shall be protected by fast acting fuses so that the failure of any one power semiconductor will not cause cascading failures. Each fuse shall be provided with a blown fuse indicator on the control panel.
6. UPS system shall have surge protection on the incoming power line side to protect unit from transient voltages.
7. UPS with delta configuration units shall have filtered bypass system. The manufacturer shall design and furnish all materials and equipment to be fully compatible
with electrical, environmental, and space conditions at the site. It shall include all equipment to properly interface the AC power source to the intended load and be designed for unattended operation.
The latest published edition of a reference shall be applicable to this Project unless identified by a specific edition date.
All reference amendments adopted prior to the effective date of this Contract shall be applicable to this Project.
All materials, installation and workmanship shall comply with the applicable requirements and standards addressed within the following references:
CSA 22.2, No. 107.3 – Uninterruptible Power Systems
ANSI/IEEE Std C62-41 – IEEE Guide for Surge Voltage in Low Voltage AC Power Circuits
IEEE 485 Sizing of Lead Acid Batteries
NFPA 70 – National Electrical Code
NEMA PE 1 – Uninterruptible Power Systems (UPS), Specifications and Performance Verification
FCC Part 15, Class A - Radio Frequency Devices
The UPS system shall be ETL listed per UL Standard 1778 Uninterruptible Power Systems, and shall be CSA Certified.
The Quality System for the engineering and manufacturing facility shall be certified to conform to Quality System Standard ISO 9001 for the design and manufacture of power protection systems for computers and other sensitive electronics.
Manufacturer Qualifications. A minimum of ten years experience in the design, manufacture,
and testing of solid-state UPS systems is required.
Factory Testing. Before shipment, the manufacturer shall fully and completely test the system to ensure compliance with the specification. These tests shall include operational discharge and recharge tests to ensure guaranteed rated performance.
Shop drawing submittals shall include, but not be limited to, the following. Completely identified and marked catalog cuts of all associated equipment and devices, with all non-applicable items crossed out, or applicable devices clearly hi-lighted and/or identified.
A written description of the system operation (written in this specification format), with all exceptions and/or deviations clearly hi-lighted or identified.
Complete bill of material for all equipment.
A dimensioned drawing showing that the proposed equipment will fit in the space allocated.
Complete control panel wiring diagrams, connection diagrams and schematics identifying all terminals and field connections.
Written statement indicating a 1-year UPS warranty and service agreement as specified. And a 4-year warrant on battery units.
Written battery warranty. Operation and Maintenance Data.
product DELIVERY, STORAGE and HANDLING
Deliver the UPS in factory-fabricated water resistant wrapping, and mounted on shipping skids.
Store in a clean, dry conditioned space. Maintain factory wrapping until installation and then
provide an additional heavy canvas or heavy plastic cover to protect units from dirt, water,
construction debris, and traffic.
Handle the UPS carefully to avoid damage to material components, enclosure and finish. The UPS shall be provided with adequate lifting means.
service and warranty
UPS and battery manufacturer shall have an established network of service centers capable of servicing the specified equipment. The nearest service center shall be within 50 miles of the Project Site.
Service center and manufacturer's personnel shall be on call 24 hours a day, 365 days a year. Factory train and certify personnel in the maintenance and repair of the equipment.
UPS Warranty. The UPS manufacturer shall warrant the unit against defects in workmanship
and materials for 1 years after initial start-up.
Battery Warranty. The battery manufacturer's standard warranty shall be passed through to the end user. The manufacturer shall provide the manufacturing date on each battery unit.
All materials shall meet or exceed all applicable referenced standards, federal, state and local requirements, and conform to codes and ordinances of authorities having jurisdiction.
ups and UPS battery MANUFACTURERS
SYSTEM DESCRIPTION Design Requirements. The UPS shall be sized to provide the minimum of kW/kVA, and additional 10% of what is indicated on the drawings.
Input and output voltage to the UPS module and external maintenance bypass shall be 480 VAC, three phase, 3-wire.
Battery system shall have a capacity of to power the UPS system full kW output for at least 30 minutes at 25°C.
Modes of Operation. The UPS system shall operate as an on-line reverse transfer system in the following modes: Normal. The critical AC load is continuously powered by the UPS inverter. The rectifier/charger derives power from the utility AC source and supplies DC power to the inverter, while simultaneously float charge the batteries.
Emergency. Upon failure of utility AC power, the critical AC load is powered by the inverters which, without any switching, obtain power from the battery plant. There shall be no interruption in power to the critical load upon failure or restoration of the utility AC source.
Recharge. Subsequent to restoration of the utility AC power, the rectifier shall automatically reactivate and provide the DC power to the inverter, simultaneously recharging the system battery. This occurs automatically and without interruption to the critical load.
Bypass. In the event that the UPS system must be taken out of service for maintenance or repair, the maintenance bypass switch shall transfer the load to the bypass source. In the event that the UPS must be taken off line due to an overload condition or UPS failure, the internal static bypass switch shall transfer the load to the bypass source. In both cases, the transfer processes shall cause no interruption in power to the critical AC load. A re-transfer from bypass to inverter shall be performed automatically in the event of overload. A re-transfer shall be inhibited if satisfactory synchronization of the inverter and bypass source is not accomplished. The use of the static switch shall not be required during the manual or automatic re-transfer process, therefore increasing reliability.
Performance Requirements. The maximum working voltage, current, and di/dt of all solid-state power components and electronic devices shall not exceed 75% of the ratings established by their manufacturer. The operating temperature of solid-state component sub-assemblyshall be greater than 75% of their ratings. Electrolytic capacitors shall be computer grade and be operated at no more than 95% of their voltage rating at the maximum rectifier charging voltage.
Rectifier/Charger.The termrectifier/chargershall denotethesolid-stateequipmentand controls necessaryto convertACto regulatedDC for inputto theinverter and for chargingthe battery. InputCurrentTotal HarmonicDistortion.ReflectedinputcurrentTHDshall beless than 4.5% atfull loadinputcurrent.
ACInputCurrentLimiting.The rectifier/chargershallincludea circuittolimit ACinput currenttoanadjustablelevel of100% to125% ofthe full inputcurrentrating.Anoptional secondcircuitshall providegreaterlimiting(60% to100%) whensignaledbyanexternal contact(i.e., duringoperation ofsecondUPS).ACinputcurrentlimitistobefactoryset at 115% for normal operation and 60for optionalsecondUPSoperation.
Battery Charge CurrentLimiting.The rectifier/chargershall includea circuittolimit battery chargingcurrenttoanadjustablelevel of1% to25%ofmaximumbatterydischargecurrent. Anoptionalsecondcircuitshall providegreater current limitingwhensignaledbyanexternalcontact (i.e.,duringoperation ofgenerators).Batterycharge currentlimit istobefactoryset at10% for normal operation and 1% for generatoroperation.
InputCurrentWalk-In.The rectifier/chargershall provideafeaturethatlimitsthe totalinitial powerrequirementattheinputterminalsto20%ofratedload,and graduallyincreases powerto100% offullrating over the 15-secondtimeinterval.Thiswalk-inshall be graphically displayedonthe frontoftheunit duringstart-up.
ShortCircuit Withstand/InterruptingRating.The UPSsystemshall besuitablefor use with the availableshortcircuit faultcurrentshown onthe drawingsand the minimuminterrupting ratingofcircuit breakers associatedwiththe UPSsystemshall begreater than the available shortcircuit faultcurrentshown onthe drawing.